How to use Selenium in colab to scrape dynamic contents?

Question

I'm trying to use selenium in google colab to scrape the comments of YouTube video, but the script call the exception. When I run that same script on my local machine it works. The YouTube video website is dynamic, and I find that the return page source content doesn't return the full content on colab. However, I don't know how to figure it out.

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException
import time

options = Options()
prefs = {"profile.managed_default_content_settings.images": 2}
options.add_experimental_option("prefs", prefs)
options.add_argument("--headless")
options.add_argument("--no-sandbox")
options.add_argument("--disable-dev-shm-usage")
options.add_argument("--window-size=2560x1440")
options.add_argument("start-maximised")
options.add_argument('--disable-gpu')
driver = webdriver.Chrome(chrome_options=options)
driver.get('https://www.youtube.com/watch?v=yIYKR4sgzI8')

time.sleep(10)
driver.execute_script('window.scrollTo(1, 500);')
time.sleep(10)

# views_div = driver.find_element_by_xpath('//*[@id="info-contents"]')
# views = views_div.find_element_by_xpath('//*[@class="view-count style-scope yt-view-count-renderer"]')

comment_div=driver.find_element_by_xpath('//*[@id="contents"]')
comments=comment_div.find_elements_by_xpath('//*[@id="content-text"]')

# titles_div = driver.find_element_by_xpath('//*[@class="detail-content"]')
# titles = titles_div.find_element_by_xpath('//*[@class="title"]')


# print(driver.page_source)
for comment in comments:
    print(comment.text)

driver.close()

Then, I get this exception.

NoSuchElementException                    Traceback (most recent call last)
<ipython-input-20-1833cad42017> in <module>()
     26 # views = views_div.find_element_by_xpath('//*[@class="view-count style-scope yt-view-count-renderer"]')
     27 
---> 28 comment_div=driver.find_element_by_xpath('//*[@id="contents"]')
     29 comments=comment_div.find_elements_by_xpath('//*[@id="content-text"]')
     30 

3 frames
/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/errorhandler.py in check_response(self, response)
    240                 alert_text = value['alert'].get('text')
    241             raise exception_class(message, screen, stacktrace, alert_text)
--> 242         raise exception_class(message, screen, stacktrace)
    243 
    244     def _value_or_default(self, obj, key, default):

NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[@id="contents"]"}
  (Session info: headless chrome=80.0.3987.87)